Diaphragm pump



FIG. 1 is a front elevation view of a diaphragm pump showing our newdesign;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a right elevation view thereof;

FIG. 4 is a left elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The structural features depicted by means of broken lines in the drawingfigures have been shown for illustrative purposes only and form no partof the claimed design.

We claim the ornamental design for a diaphragm pump, as shown anddescribed.